This has been written about here. Its amazing people are still learning about this. I bet that means there are still a tone of these cars out there that have not been fixed.
Please, when you post your letter here, take an extra minute to file a complaint with the national highway transportation at the following web site:
http://www-odi.nhtsa.dot.gov/ivoq/
You could also send a letter to paul halata (c.e.o.) at:
paul.halata@mbusa.com.
I know a lot of people decide to pay for these out of their own pocket but Mercedes cannot be irresponsible for their products just because they are now 10 years old. Ford recently issued a recall on older vehicles.